Boiler for articulated locomotives.



W. I. LEIGHTY. BOILER FOR ARTICULATBD LocoMoTlVEs,

APPLIATION FILED JULY2B, 1910.

Patented Oct. 7, 1913.

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W. I. LEIGHTY.

BOILER POR ARTIGULATED LOGOMOTIVBS. APPLIGATION FILED JULY 2B, 1910.

Patented 0013.721913.

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W. J. LEIGHTY. BOILBR FOR ARTIGULATBD LoooMoTIvEs. APPLOATION FILEDJULYZB, 1910. 1,974,871, Patented 0013.7, 1913.

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mirra srar WILLIAM J. LEIGHTY,

0F TOPEKA, KANSAS.

BOILER FOR ARTICULATED LOCOMOTIVES.

Specification of Letters Patent.

Patented Oct. 7, 1913.

Application filed July 28, 1910. l Serial No. 574,300.

To all whom t may concern:

Be it known that I, WILLIAM J. LEIGHTY, a citizen of the United States,and resident of Topeka, in the county of Shawnee and State of Kansas,have invented a certain new and useful Improvement in Boilers forArticulated Locomotives, of which the following is a description,reference being had to the accompanying drawings, which form a part ofmy specification.

My invention relates to a flexible joint for boilers on articulatedlocomotives; the object being to provide a flexible joint whereby thetwo part-s of the boiler of an articulated type of loco-motivearevconnected together, e'. e., a locomotive consisting of twoindependent sets of mechanism attached to two frames which are hinged orcoupled together, thusallowing a long wheel base, but providing enoughflexibility for the locomotives to pass around curves.

The object of my invention is to provide means whereby the two parts ofthe boiler may be rigidly attached to the two independent frames of thelocomotive, permitting the two parts of the boiler to follow therelative movement of the framesv to which they are att-ached.

A further object of my invention is to provide space for superheatingmeans for the two locomotives and a simple steam pipe arrangement withthe least possible number of flexible joints in the steam pipes.

Another object of my invention is to provide as large a flexible jointas possible in order to keep the temperature of the walls as low aspossible and thus allow more favorable conditions of the lubrication ofthe joints.

A still further object of my invention is to provide a joint which isreadily separable,

allowing the two sections of the locomotive to be easily parted in orderto make repairs on the fines and the like.

The advantages of my invention will be more clearly understood from thefollowing detailed description of the accompanying drawings, whereinFigure l is a side elevation of a locomotive equipped with my improvedflexible joint. Fig. 2 is a longitudinal sectional view of the flexiblejoint of the boiler shown on an enlarged scale. Fig. 8 is a longitudinalsectional view illustrating a modified form of the flexible joint of theboiler. Fig. 4C is a longitudinal sectional view of another modifiedform of the flexible joint of the boiler.

In Fig. l I have illustrated the flexible joint applied to a locomotiveconsisting of two ten coupled units, in which l represents the rear orlire-box end of the boiler, which consists of the boiler proper, z'. e.,the part that is used for generating the steam; while the front part 2of the boiler constitutes a feed-water heater 3, and a smoke box 4f.rIhese two parts l and 2 are connected by the flexible joint 5, see Fig.1, which forms the intermediate part of the boiler shell and surroundsthat portion of the boiler shell which I will designate as thesuperheating combustion chamber which is occupied by the superheaters 6and 7 which supply the engines for the rear and forward sets of drivingmechanism, respectively. The boiler tfeed-water is supplied to thefeed-water heater 3 by the injector pipes 8, see Fig. l, leading fromthe injectors. The injector pipes 8 are provided with flexible means 9which allow the pipes to articulate with the parts of the boiler andframe. The feedwater is conducted from the feed-water heater 3 to theboiler l by the pipes 10, which pipes are also provided with theflexible means 1l for the same purpose as that mentioned in connectionwith the flexible means 9 of pipes 8. The front end of the rear part lof the boiler is rigidly secured to the frame 12 by the saddle 13; whilethe rear end of the forward part 2 of the boiler is rigidly secured tothe frame let by the saddle l5. The steam distribution indicated in Fig.1 applies to an articulated locomotive in which the rear part is thehigh pressure engine, while the forward part is the low pressure engine.The steam is delivered to the high pressure superheater 6, see Fig. l,through the dry pipe 15a, shown in dotted lines, and is conducted fromthe superheater by the steam pipe 16 to the high pressure cylinders A.The steam is conducted from the high pressure cylinders A to the saddlel5 through the 'flexible steam pipe 17 which, in my improvedconstruction, is the only fiexible steam pipe required in the entirelocomotive.

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shown riveted into the boiler shell 20h. The forward end of the dry pipel5a is shown in its relation to the front lue sheet of the boiler; thefront end of the boiler tubes are also shown at 65, secured to the fluesheet 64. ln smaller articulated locomotives or in those where thevertical movement required of the flexible joint is very slight, themodiiication shown in F ig. 4l and just described, will be foundadequate to suit the conditions to which the joint may be subjected.

By having the flexible joint as near the diameter or' the boiler aspossible, the gases of combustion will have ample room to pass throughand thus impart as little heatto the walls ot the joint, as possible,and in this manner keep the ten'iperature of the walls ot' the jointcomparatively low, and thus aid the lubrication of the joint.

The object of my invention is to make a practicable and economicalconstruction that will simplify the construction of the rigid boilerssuch as are now in use on articulated locomotives and are supported onkthe front or movable trame by sliding supports. Such a constructionnecessitates the use of complicated steam pipes provided with numerousliexible steam joints. With my improved construction the number oitflexible steam joints are reduced to a minimum; and with the front partof the boiler rigidly secured to the frame and made to articulate withit, permits the center of gravity of the boiler to remain at all timesin the same relation to the trames and driving mechanism or thelocomotive.

l have shown and described what l believe to be the simplest form of myinvention, but the same may be altered in a number of details withoutdeparting from the spirit of my invention, and l do not wish to beunderstood, therefore, as limiting myself to the exact constructionshown and described, but

What l claim as my invention and wish to secure by Letters Patent is l.A boiler rade in two sections, one section being articulated to theother by a movable joint connection.

2. A boiler made in two sections, one section being articulated to theother by a two part'movable joint tlue.

3. A boiler made in two sections, a coupling member' secured to each ofsaid sections, said coupling'members being articulated by a movablejoint.

4t. A boiler made in two sections, means intermediate of said sections,the interior diameter of said means being substantially the same as theinterio-r diameter of said boiler sections whereby the boiler sectionsmay have independent movement.

5. A locomotive boiler made in two sections disposed one in advance ofthe other, and an articulated iue whose interior diameter issubstantially the same as the interior diameter of said sections andattached at its opposite ends thereto to constitute the coupling member.

6. A boiler made in two sections and provided with a smoke box in theadjoining ends of said sections, said sections being secured together byan articulated flue of substantially the same diameter as said boilersections, said flue permitting or" the relative movement of said boilersections.

7. A boiler made in two sections, means intermediate of said sectionsformed to provide a ball and socket joint between said sections ofsubstantially the same diameter as said boiler sections.

8. A boiler made in two sections, each section provided with a smoke boxin the adjacent ends, and a pair or' members intermediate of saidsections, formed to provide ball and socket and expansible jointswhereby the sect-ions may have universal and longitudinal movement.

9. A locomotive boiler' made in two sec-k tions, one disposed in advanceof the other and spaced apart, and an intermediate moin able jointsection whereby the two boiler sections are coupled together, saidintermediate section constituting a flue for the boiler.

l0. A boiler' made in two sections, and means secured to the adjacentends ot said sections, formed to provide ball and socket and expansiblejoints capable of universal and longitudinal movement.

ll. A boiler made in' two'sections spaced apart, and a pair of membersarranged intermediate of the sections to form a tlue for the bo-iler ofsubstantially the saine diameter as said sections, said members beingtermed to provide spherical and expansible joints capable of universaland longitudinal movement.

l2. A boiler made in two sections, the one section disposed in advanceof the other sec# tion, and means removably secured to the adjacent.ends of said sections whereby ball and socket and expansible joints areprovided capable of horizontal, vertical and longitudinal movement.

13. A boiler made in two sections, the one section in advance of theother section, and means secured to the ends of said sections arrangedto form two ball and socket joints, said means permitting longitudinalmovement.

14. A boiler made in two sections, one section in advance of the other,and means coacting with the adjacent ends of said boiler sections toprovide an interlocking joint therefor.

l5. A boiler made in two sections, one section in advance of the other,and means coacting with the adjacent ends of said boiler sections toprovide an interlocking bustion chamber between the two sections,

joint therefor, whereby an articulated flue is provided of substantiallythe same diameter as the boiler sections.

16. A boiler made in two sections, one section in advance of the other,and means coacting with the adjacent ends of said boiler sectionsarranged to provide interlocking ball and socket and expansible jointscapable oi universal and longitudinal movement.

17.` A boiler made in two sections, one section in advance of the other,and means coacting with the adjacent ends of said boiler sectionsarranged to provide interlocking ball and socket joints whereby anarticulating flue is provided of substantially the same diameter as theboiler sections.

18. A boiler mad-e in two sections, one section in advance of the other,and means coacting with the adjacent ends of said boiler sections toprovide an interlocking and eX- kpansible joint capable of universalmovement whereby an articulating iiue is providedl of substantially thesame diameter as the boiler sections.

19.V A boilermade in two sect-ions, a combustion chamber be-tween thetwo sections, the casing ot the combustion chamber being cylindrical andof substantially the same di-y aineter as said boilerv sections, saidcasing comprising non-flexible sections so connected Yas tok constitutea substantially universal joint. y

` 20..,A boiler made inv two sections, a comthe casing of the combustionchamber being cylindrical in form and constituting a ilexif Vti@ joint..

Y 21. A boiler made in two. sections, means whereby the two sections areflexibly joined together, a portion of said means constituting a balland socket joint, while the other portion constitutes a sliding` oreXpansible joint.

22. A boiler made in two sections, means whereby the two sections areflexibly joined together, said means being formed of nontlexiblesections which are of substantially the same diameter as the boilersections, and means whereby said joints are maintained air-tight.

28. A boiler made in two sections, the one in. advance of the other,means whereby the two sect-ions are flexibly joined together, a portionof said means constituting a sliding or eXpansible joint, and meanswhereby said joints are maintained air-tight.

24E. A boiler made two. sections, the one in advance oi' the other, andmeans intermediate of said sections, the coacting ends of the boilersections and ot' said means ben ing formed to constitute ball and socketjoints, said means providing a combustion noms?? chamber intermediateotthe two boiler sections.

25. A boiler made in two sections,V the one in advance of' the other,and means int-ei'- mediate ot' said sections, the coacting ends'V of theboiler sections and said meansbeing formed to provide ball and socketjoints whereby the two` sections are flexibly joined together, saidmeans permitting of independent longitudinal movement of the twosections.

26. A boiler made in two sections, the one in advance oit' the other,means intermedia-te of the two sections to form a combustion chamber,the coacting ends of said means and the two boilery sections beingformed to provide ball and socket joints, means whereby said joints arelubricated.

27. A boiler made in two sections, the one in advance of the other, andmeans inter-` mediate of the two sections forming a com-- bustionchamber, the coacting ends of said means and the two sections beingformed to provide ball and socket or spherical joints, while theintermediate part of said means constitutes a sliding or eXpansible.joint.

A boiler made in two sections, one arranged in advance of the other, andanintervening movable section comprising non flexible members wherebythe two boiler sections are coupled together, said intervening sectionconstituting. a combustionA chamber of substantially the same diameteras the boiler sections.V Y

29. A boiler mad-e intwo sections, one. arf ranged in advance ottlieother on the. same longitudinal' line, and an intervening flexiblesection., whereby the two boiler sectionsare coupled together, saidintervening section being composed of telescopic members.

30. A boiler made in two sections, one arranged in advance of the otheron the same longitudinal line, with an intervening leXilble sectionwhereby the two boiler sections are coupled together, said interveningsection being composed of telescopio members, and meansk whereby saidiii-embers are lockedV into place.

31. A boiler made in two. sections, the one sections7 the whole being soarranged as to` require two swivel ball joints in the steam distributingpipes.

33. l boiler made in two sections, the one in advance of the other, andcoupling means cylindrical in form and of substantially the samediameter as the boiler sections, said means forming an interlockingjoint capable of universal movement.

34. A boiler made in two sections, coupling means cylindrical in formand of sub stantially the same diameter as the boiler sections, saidmeans forming an interlocking joint capable of universal movement, andmeans whereby said joint is maintained air-tight.

35. A boiler made in two sections, the one in advance of the other, anda composite member coasting with the ends of the boiler sections wherebysaid sections are flexibly joined together', said member comprisingnonexible parts which are removably secured to the adjacent ends of saidboiler sections.

86. A boiler made in two sections, the one in advance of the other, anda composite member coacting with the ends of the boiler sections to forma ball and socket or spherical joint, the parts of said member beingremovably secured to the adjacent ends of said boiler sections.

WILLIAM J. LEIGH'IY.

`Witnesses FRANK MITCHELL, DAVID H. OWEN.

Gopies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents' Washington, 3D. C.

